| 单比特量化软件接收机中的鲁棒数字鉴相器 |
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| 引用本文： | 赵晋,张建秋,尹建君,李阳.单比特量化软件接收机中的鲁棒数字鉴相器[J].系统工程与电子技术,2011,33(1):173-0178. |
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| 作者姓名： | 赵晋 张建秋 尹建君 李阳 |
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| 作者单位： | 1. 复旦大学电子工程系，上海 200433;;
2. 复旦大学专用集成电路与系统国家重点实验室, 上海 201203 |
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| 基金项目： | 国家自然科学基金(60872059); 专用集成电路与系统国家重点实验室面上项目(MS20080201); 国家科技重大专项(2009ZX02027-004)资助课题 |
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| 摘 要： | 提出一种新的应用于单比特量化软件接收机中的鉴相器--鲁棒数字鉴相器。与已有的数字鉴相器不同，提出的鉴相器是对I、Q 两路的载波相位分别进行估计，再进行线性融合，从而提供了比数字鉴相器更好的精度和鲁棒性。分析与仿真结果表明，无论是在高信噪比还是低信噪比环境下，在单比特量化接收机中，提出的鉴相器估计精度均优于传统的反正切鉴相器和数字鉴相器，具有良好的性能和鲁棒性。
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| 关 键 词： | 模数转换器 鉴相器 软件接收机 全球导航卫星系统 |
Robust digital phase discriminator in one-bit quantized software-defined receivers |
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| ZHAO Jin,ZHANG Jian-qiu,YIN Jian-jun,LI Yang.Robust digital phase discriminator in one-bit quantized software-defined receivers[J].System Engineering and Electronics,2011,33(1):173-0178. |
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| Authors: | ZHAO Jin ZHANG Jian-qiu YIN Jian-jun LI Yang |
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| Institution: | 1. Department of Electronic Engineering, Fudan University, Shanghai 200433, China;;
2. State Key Laboratory of ASIC & System, Fudan University, Shanghai 201203, China |
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| Abstract: | This paper presents a novel phase discriminator called robust digital phase discriminator (RDPD) for one-bit analog-to-digital conversion (ADC) software-defined receivers. Differing from the existing digital phase discriminator (DPD), the proposed RDPD estimates carrier phases of I-branch and Q-branch separately and then fuses the estimation results to achieve a higher precision and better robustness. Analysis and simulation results indicate that the proposed RDPD outperforms traditional arctangent phase discriminator (APD) and DPD in estimation precision whether the signal-to-noise ratio (SNR) is high or low. |
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| Keywords: | analog-to-digital conversion (ADC) phase discriminator software defined receiver global navigation satellite system (GNSS) |
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